Brake-valve device.



w. v. TURNER.

BRAKE-VALVE DEVICE.

APPLICATION FILED NOV. 21.1917.

Patented Oct. 1, 1918.

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Specification of 'tetters Patent.

original application filed October-21, i916, Serial No, 126,869, Divided and this application filed November 21, 15517. Serial No. 203,241.

T all whom it may conoern:

Be it known that 1, V ALTER V. TURNER, a eitizen of the Unitedi filirinsburg, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Brake- Valve Devices, of which theiollowing is a specification, v

i 5 This invention relates to locomotive brake equipments, the present application being a division oi application Serial No. 126,869,

filed October 21, 19116.-

More particularly, the invention relates to f a brake valve device, the handle of which is adapted to operate a valve in addition to the usual rotary valve, the additional valve being moved in one direction by a spring.

Force is or course required to movethe usual rotary valve on its seat and in order to assure the ready and prompt closing of the additional valve by Its-spring, the prinoipal ohjeot of my invention contemplates "providing a lost motion between the brake valve handle and the rotary valve,so that the spring acting on the additional valve only has to move the additional valve and 'the lorake valve handle, Without moving the rotary valve.

in the accompanying drawing, Figure 1 is a planview, part1 in section, of a brake valve device, embo y ng my invention; Fig

2 a vertical sectional view thereof, and Fig, '3 a plan view of the brake valve, With-theeasing removedn Apartmular application of my invention is shown in the drawing, in Which an independent brake, valve device 3 is provided for controlling the locomotive brakes independlid ently ofthe train-brakes,

in order to secure a prompt independent release of the brakes, a pilot valve 49 is provided which is normally adapted to. connecta passage 56 with an exhaust port 53, the

valve being provided with astem 50 adapted to be operated by the brake valve handle 1, for connecting a passage 52, leading from.

the rotary valve chamber 2, to passage 56, and for cutting off the exhaust port 53 from said passage 56 r Passage 56 is connected in the release position of the independent rotary valve 32,

through cavity with a passage 54 which leads to a, release valve adapted to be operated, when fluid under pressure is supplied to passage 54, for effecting the quick release tates, residing at independent release of the locomotive brakes,

the brake valve handle 1 is moved from its normaljrelease position so to engagethe stem 50 and thereby lift the valve 49 from itsseat. Fluid under pressure is then sup plied from rotary valve chamber 2, through passage 52 to passage 56, the exhaust port 53 being cut off by the movement of the valve ,stenthO. fllhe release of the brakes on the locomotive independently of those on the train is thus effected.

Upon release of the brake valve handle 1, the spring 51 shifts the valve 49 to its closed position, also moving the handle 1 to the po- 'sition shown in Fig. 1. The lost motion provided between the rotary valve 32'and the stem 95, however, permits the movement of the handle 1 Without moving the rotary valve 32, so that a prompt and positive closingiof the valve 49 is assured. l

, Having now described my invention, What I'claim as new, and desire to secure by Letters Patent, is o o l. In a fluid pressure brake,th e; combination with a brake valve device having a valve provided with ports for controlling the rakes, anda-handle for operating said valve 'having a movement relative thereto, of a spring for moving the handle relatively to thevalve' f I 2. In a brake valve device, the combination with arotary valve pro videdwith ports for controllingthe brakes, of a handle for operating said valve and movable relatively thereto and a spring-for opposing movement of the handle to release position and adapted Eli till

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relative thereto, a release valve adapted to be operated by movement of sald handle to release position, and a spring for opposing said movement and adapted to return the- 5 handle to running position Without moving the rotary valve.

at. In a brake 'valve device, the eombination with a rotary valve, of a handle for op erating said valve provided with a stem 10 adapted to have a movement relative to said valve, a release valve operated by movement of said handle, and a spring acting on said release valve for opposing movement of the handle and adapted to close the release valve and shift the handle Without moving the ro- 15 tary valve.

In testimony whereof I have hereunto set my hand.

WALTER v. TURNER.

C'opies of this patent may be obtained; for five cents each, by addressing the Commissioner ofl Patents, Washington, D. C. 

